Hay guys, I was looking around the internet and found this little guy:
http://fg-airsoft.com/en/parts-for-w...-ghk-pdw-.html
http://youtu.be/z-hpth7Fx94
It's a steel nozzle for WE M4 GBBR, with easy to adjust NPAS. Has anyone purchased this? It looks quite nifty and much more stable FPS wise than the RA-Tech nozzle and NPASinstalled! jJust really, really expensive >_>